C++ QWidget::child方法代码示例

void QSAEditorBrowser::showHelp( const QString &str )
{
    qFatal( "QSAEditorBrowser::showHelp( %s )", str.toLatin1().data() );
#if 0
    if ( ( (QSAEditor*)curEditor)->isDebugging() ) {
	QString s = str.simplified();
	static QString legalChars = "abcdefghijklmnopqrstuvwxyzABSCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_";
	while ( s.length() > 0 ) {
	    if ( legalChars.find( s[0] ) == -1 )
		s.remove( 0, 1 );
	    else
		break;
	}
	while ( s.length() > 0 ) {
	    if ( legalChars.find( s[ (int)s.length() - 1 ] ) == -1 )
		s.remove( s.length() - 1, 1 );
	    else
		break;
	}

	if ( s[ (int)s.length() - 1 ] == ';' )
	    s.remove( s.length() - 1, 1 );

	QString type, val;
	QSProject::ideQSAInterpreter()->debuggerEngine()->watch( s, type, val );
	if ( !val.isEmpty() && !type.isEmpty() ) {
	    QWidget *w = curEditor->topLevelWidget();
	    QObject *o = w->child( "QSA_debugger_variableview", "QSAVariableView" );
	    if ( o )
		( (QSAVariableView*)o )->addWatch( s );
	}
    } else {
    }
#endif
}

Vis::Selector*
Vis::Selector::instance()
{
    QWidget *parent = reinterpret_cast<QWidget*>( pApp->playlistWindow() );
    QObject *o = parent->child( "Vis::Selector::instance" );

    debug() << bool(o == 0) << endl;

    return o ? static_cast<Selector*>( o ) : new Selector( parent );
}

void KuickShow::replayAdvance(DelayedRepeatEvent *event)
{
    // ### WORKAROUND for QIconView bug in Qt <= 3.0.3 at least
    // Sigh. According to qt-bugs, they won't fix this bug ever. So you can't
    // rely on sorting to be correct before the QIconView has been show()n.
    if ( fileWidget && fileWidget->view() ) {
        QWidget *widget = fileWidget->view()->widget();
        if ( widget->inherits( "QIconView" ) || widget->child(0, "QIconView" ) ){
            fileWidget->setSorting( fileWidget->sorting() );
        }
    }
    // --------------------------------------------------------------

    slotAdvanceImage( event->viewer, *(int *) (event->data) );
}

void KuickShow::slotReplayEvent()
{
    disconnect( fileWidget, SIGNAL( finished() ),
                this, SLOT( slotReplayEvent() ));

    DelayedRepeatEvent *e = m_delayedRepeatItem;
    m_delayedRepeatItem = 0L; // otherwise, eventFilter aborts

    eventFilter( e->viewer, e->event );
    delete e;

    // ### WORKAROUND for QIconView bug in Qt <= 3.0.3 at least
    if ( fileWidget && fileWidget->view() ) {
        QWidget *widget = fileWidget->view()->widget();
        if ( widget->inherits( "QIconView" ) || widget->child(0, "QIconView" ) ){
            fileWidget->setSorting( fileWidget->sorting() );
        }
    }
    // --------------------------------------------------------------
}

void KstEditViewObjectDialogI::updateWidgets() {
  // clear all the current widgets from the grid
  clearWidgets();

  // get the qt properties of the viewobject
  if (_viewObject) {
    _customWidget = _viewObject->configWidget();
    if (_customWidget) {
      _grid = new QGridLayout(_propertiesFrame, 1, 1);
      _customWidget->reparent(_propertiesFrame, QPoint(0, 0));
      _grid->addWidget(_customWidget, 0, 0);
      _viewObject->fillConfigWidget(_customWidget, _isNew);
      if (!_isNew) {
        _viewObject->connectConfigWidget(this, _customWidget);
      }
      resize(minimumSizeHint());
      return;
    }
    
    //---------------------------------------------------------------
    // NOTE: due to Early return, nothing after this line is executed
    // if the view object provides a custom widget.

    int numProperties = _viewObject->metaObject()->numProperties(true);

    // create a new grid
    _grid = new QGridLayout(_propertiesFrame, numProperties, 2, 0, 8);
    _grid->setColStretch(0,0);
    _grid->setColStretch(1,1);
    
    // get the property names and types
    for (int i = 0; i < numProperties; i++) {
      const QMetaProperty* property = _viewObject->metaObject()->property(i, true);
      QString propertyType(property->type());
      QString propertyName(property->name());
     
      // for this property, get the meta-data map
      QMap<QString, QVariant> metaData = _viewObject->widgetHints(propertyName);
      
      if (!metaData.empty()) {
        QString friendlyName = metaData["_kst_label"].toString();
        QString widgetType = metaData["_kst_widgetType"].toString();
        metaData.erase("_kst_label");
        metaData.erase("_kst_widgetType");
        
        // use friendly name for label
        QLabel* propertyLabel = new QLabel(_propertiesFrame, "label-"+i);
        propertyLabel->setText(friendlyName);
        _grid->addWidget(propertyLabel,i,0);
        _widgets.append(propertyLabel);
        propertyLabel->show();
        
        // display different types of widgets depending on what dialogData specifies
        QWidget* propertyWidget = 0L;
        if (widgetType == "QSpinBox") {
          // insert a spinbox
          propertyWidget = new QSpinBox(_propertiesFrame, (propertyName+","+"value").latin1()); 
          propertyWidget->setProperty("value", _viewObject->property(property->name()));
          if (!_isNew) {
            connect(propertyWidget, SIGNAL(valueChanged(const QString&)), this, SLOT(modified()));
            connect(propertyWidget->child("qt_spinbox_edit"), SIGNAL(textChanged(const QString&)), this, SLOT(modified()));
          }
        } else if (widgetType == "KColorButton") {